All Questions
Tagged with javascript object
26,829 questions
1
vote
1
answer
66
views
Clarification on Computed Properties [closed]
I’m studying TypeScript and came across this pattern:
type Animal = { [key: string]: number };
let Tiger: Animal = { legs: 4, age: 5, tail: 1, eyes :2 };
From what I understand, this allows adding ...
- 23
1
vote
1
answer
116
views
Matching Card Game using JS
*{
box-sizing: border-box;
}
.clear {
clear: both;
}
section {
border: 1px solid black;
height: 200px;
width: 50%;
float: left;
}
<!DOCTYPE html>
<html lang="en">
<...
- 11
1
vote
1
answer
51
views
Attaching inner functions that use the same random number to related button click events js
I'm working on a game that will take a random object, and use that same random object for a series of questions/functions. I'm having trouble getting the next piece of code to run after clicking the &...
1
vote
1
answer
56
views
Object is returning empty has some properties on expand it shows
I'm getting response as empty by checking Object.keys(response) it returns empty array but on expanding the response it looks like what shown below. Can someone help me to understand this?
This is the ...
- 13
1
vote
2
answers
81
views
array.prototype is being applied to a non-array object (?)
I have a library with the following addition for Array types -
Array.prototype.top = function() {
return (this.length > 0) ? this[this.length-1] : null;
}
It seems to be applied to non-...
- 111
0
votes
4
answers
71
views
Get key of an array of objects, searching by value of object property
I have an array of objects as such
const aaa = [
{id: 10, val: "xx"},
{id: 27, val: "tr"},
{id: 13, val: "ut"}
]
Now, I know how to search for an object by a value ...
- 8,309
1
vote
2
answers
56
views
How to point to an object inside an object and display it without knowing the name
How to point to an object inside an object and display it without knowing the name.
I just want to display the values of the objects inside person.
using the if I only want to display the values ...
- 95
0
votes
1
answer
56
views
fs.writeFile adds extra brackets to json of key=>values object in node.js
I'm trying to update one JSON file in a for loop called asynchronously. Each time I update the whole file, with 1 object.
This is my very complex code after half a day of research. (I know it's too ...
- 423
0
votes
2
answers
58
views
Jsonata how to avoid auto change in order javascript
I have array of objects as sample below.
After JSONata evaluation, the order of array of object changes. string with numeric id appears before i.e id 5 appears before id 4a.
How to avoid this change ...
- 773
0
votes
1
answer
44
views
Is my understanding of the `callback` keyword correct here?
The following code snippet is part of an exercise in which I need to guess the output of the code:
let length = 4;
function callback(){
console.log(this.length);
}
const object = {
length: 5,
...
- 45
-6
votes
1
answer
82
views
Creating a hierarchical array of objects with many sub-levels
I have an array of objects (possible thousands) that may or not be nested (possible tens of nests). A subset of the data looks like this:
let data = [
{"id":"m1", "name&...
- 143
0
votes
1
answer
78
views
How to prevent data loss when updating nested objects in Node.js?
I have an object called productionSheet which contains details of a plastic bag. Dimensions and other information are stored inside productionSheet.bagDetails.
When my app's backend receives the ...
1
vote
1
answer
42
views
Value from a spread object does not correctly assign the type when the type is a union [duplicate]
This is kind of a strange edge case that it took me several hours to figure out, but I don't know what typescript rule is causing it, so I'm curious if this is something I'm not aware of, or if it's a ...
0
votes
0
answers
24
views
When can using Reflect in a Proxy trap cause an infinite loop?
Following the documentation on Proxies on MDN, under the example bellow, there is this disclaimer:
If you use Reflect methods within a proxy trap, and the Reflect method
call gets intercepted by the ...
- 1,081
-3
votes
2
answers
81
views
How can I push to an array inside an object that is returned by a function? [closed]
I am trying to access and alter an array that is within an object that is being returned by a function. I built two mock arrays within objects (The first on its own, the second inside a function.) The ...
